1 /* SPDX-License-Identifier: GPL-2.0-only */ !! 1 /* SPDX-License-Identifier: GPL-2.0 */
>> 2 #include <asm/asm-offsets.h>
>> 3 #include <asm/thread_info.h>
>> 4
>> 5 #define PAGE_SIZE _PAGE_SIZE
>> 6
2 /* 7 /*
3 * Linker script for Hexagon kernel !! 8 * Put .bss..swapper_pg_dir as the first thing in .bss. This will
4 * !! 9 * ensure that it has .bss alignment (64K).
5 * Copyright (c) 2010-2014, The Linux Foundati <<
6 */ 10 */
>> 11 #define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
7 12
8 #include <asm-generic/vmlinux.lds.h> !! 13 /* Cavium Octeon should not have a separate PT_NOTE Program Header. */
9 #include <asm/asm-offsets.h> /* Most of th !! 14 #ifndef CONFIG_CAVIUM_OCTEON_SOC
10 #include <asm/mem-layout.h> /* except for !! 15 #define EMITS_PT_NOTE
11 #include <asm/cache.h> /* and now we !! 16 #endif
12 #include <asm/thread_info.h> /* and we nee <<
13 <<
14 OUTPUT_ARCH(hexagon) <<
15 ENTRY(stext) <<
16 17
17 jiffies = jiffies_64; !! 18 #define RUNTIME_DISCARD_EXIT
18 19
19 /* !! 20 #include <asm-generic/vmlinux.lds.h>
20 See asm-generic/vmlinux.lds.h for expansion of <<
21 See asm-generic/sections.h for seemingly requi <<
22 */ <<
23 21
24 #define PAGE_SIZE _PAGE_SIZE !! 22 #undef mips
>> 23 #define mips mips
>> 24 OUTPUT_ARCH(mips)
>> 25 ENTRY(kernel_entry)
>> 26 PHDRS {
>> 27 text PT_LOAD FLAGS(7); /* RWX */
>> 28 #ifndef CONFIG_CAVIUM_OCTEON_SOC
>> 29 note PT_NOTE FLAGS(4); /* R__ */
>> 30 #endif /* CAVIUM_OCTEON_SOC */
>> 31 }
>> 32
>> 33 #ifdef CONFIG_32BIT
>> 34 #ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 35 jiffies = jiffies_64;
>> 36 #else
>> 37 jiffies = jiffies_64 + 4;
>> 38 #endif
>> 39 #else
>> 40 jiffies = jiffies_64;
>> 41 #endif
25 42
26 SECTIONS 43 SECTIONS
27 { 44 {
28 . = PAGE_OFFSET; !! 45 #ifdef CONFIG_BOOT_ELF64
29 !! 46 /* Read-only sections, merged into text segment: */
30 __init_begin = .; !! 47 /* . = 0xc000000000000000; */
31 HEAD_TEXT_SECTION !! 48
32 INIT_TEXT_SECTION(PAGE_SIZE) !! 49 /* This is the value for an Origin kernel, taken from an IRIX kernel. */
33 PERCPU_SECTION(L1_CACHE_BYTES) !! 50 /* . = 0xc00000000001c000; */
34 __init_end = .; !! 51
35 !! 52 /* Set the vaddr for the text segment to a value
36 . = ALIGN(_PAGE_SIZE); !! 53 * >= 0xa800 0000 0001 9000 if no symmon is going to configured
37 _stext = .; !! 54 * >= 0xa800 0000 0030 0000 otherwise
38 .text : AT(ADDR(.text)) { !! 55 */
39 _text = .; !! 56
>> 57 /* . = 0xa800000000300000; */
>> 58 . = 0xffffffff80300000;
>> 59 #endif
>> 60 . = LINKER_LOAD_ADDRESS;
>> 61 /* read-only */
>> 62 _text = .; /* Text and read-only data */
>> 63 .text : {
40 TEXT_TEXT 64 TEXT_TEXT
41 IRQENTRY_TEXT <<
42 SOFTIRQENTRY_TEXT <<
43 SCHED_TEXT 65 SCHED_TEXT
>> 66 CPUIDLE_TEXT
44 LOCK_TEXT 67 LOCK_TEXT
45 KPROBES_TEXT 68 KPROBES_TEXT
>> 69 IRQENTRY_TEXT
>> 70 SOFTIRQENTRY_TEXT
>> 71 *(.text.*)
46 *(.fixup) 72 *(.fixup)
>> 73 *(.gnu.warning)
>> 74 } :text = 0
>> 75 _etext = .; /* End of text section */
>> 76
>> 77 EXCEPTION_TABLE(16)
>> 78
>> 79 /* Exception table for data bus errors */
>> 80 __dbe_table : {
>> 81 __start___dbe_table = .;
>> 82 KEEP(*(__dbe_table))
>> 83 __stop___dbe_table = .;
47 } 84 }
48 _etext = .; <<
49 85
50 INIT_DATA_SECTION(PAGE_SIZE) !! 86 _sdata = .; /* Start of data section */
>> 87 RO_DATA(4096)
51 88
52 _sdata = .; !! 89 /* writeable */
53 RW_DATA(32,PAGE_SIZE,_THREAD_S !! 90 .data : { /* Data */
54 RO_DATA(PAGE_SIZE) !! 91 . = . + DATAOFFSET; /* for CONFIG_MAPPED_KERNEL */
55 _edata = .; !! 92
>> 93 INIT_TASK_DATA(THREAD_SIZE)
>> 94 NOSAVE_DATA
>> 95 PAGE_ALIGNED_DATA(PAGE_SIZE)
>> 96 CACHELINE_ALIGNED_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 97 READ_MOSTLY_DATA(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 98 DATA_DATA
>> 99 CONSTRUCTORS
>> 100 }
>> 101 BUG_TABLE
>> 102 _gp = . + 0x8000;
>> 103 .lit8 : {
>> 104 *(.lit8)
>> 105 }
>> 106 .lit4 : {
>> 107 *(.lit4)
>> 108 }
>> 109 /* We want the small data sections together, so single-instruction offsets
>> 110 can access them all, and initialized data all before uninitialized, so
>> 111 we can shorten the on-disk segment size. */
>> 112 .sdata : {
>> 113 *(.sdata)
>> 114 }
>> 115 _edata = .; /* End of data section */
56 116
57 EXCEPTION_TABLE(16) !! 117 /* will be freed after init */
>> 118 . = ALIGN(PAGE_SIZE); /* Init code and data */
>> 119 __init_begin = .;
>> 120 INIT_TEXT_SECTION(PAGE_SIZE)
>> 121 INIT_DATA_SECTION(16)
>> 122
>> 123 . = ALIGN(4);
>> 124 .mips.machines.init : AT(ADDR(.mips.machines.init) - LOAD_OFFSET) {
>> 125 __mips_machines_start = .;
>> 126 KEEP(*(.mips.machines.init))
>> 127 __mips_machines_end = .;
>> 128 }
>> 129
>> 130 /* .exit.text is discarded at runtime, not link time, to deal with
>> 131 * references from .rodata
>> 132 */
>> 133 .exit.text : {
>> 134 EXIT_TEXT
>> 135 }
>> 136 .exit.data : {
>> 137 EXIT_DATA
>> 138 }
>> 139 #ifdef CONFIG_SMP
>> 140 PERCPU_SECTION(1 << CONFIG_MIPS_L1_CACHE_SHIFT)
>> 141 #endif
>> 142
>> 143 #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
>> 144 .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
>> 145 *(.appended_dtb)
>> 146 KEEP(*(.appended_dtb))
>> 147 }
>> 148 #endif
>> 149
>> 150 #ifdef CONFIG_RELOCATABLE
>> 151 . = ALIGN(4);
58 152
59 BSS_SECTION(_PAGE_SIZE, _PAGE_SIZE, _P !! 153 .data.reloc : {
>> 154 _relocation_start = .;
>> 155 /*
>> 156 * Space for relocation table
>> 157 * This needs to be filled so that the
>> 158 * relocs tool can overwrite the content.
>> 159 * An invalid value is left at the start of the
>> 160 * section to abort relocation if the table
>> 161 * has not been filled in.
>> 162 */
>> 163 LONG(0xFFFFFFFF);
>> 164 FILL(0);
>> 165 . += CONFIG_RELOCATION_TABLE_SIZE - 4;
>> 166 _relocation_end = .;
>> 167 }
>> 168 #endif
>> 169
>> 170 #ifdef CONFIG_MIPS_RAW_APPENDED_DTB
>> 171 __appended_dtb = .;
>> 172 /* leave space for appended DTB */
>> 173 . += 0x100000;
>> 174 #endif
>> 175 /*
>> 176 * Align to 64K in attempt to eliminate holes before the
>> 177 * .bss..swapper_pg_dir section at the start of .bss. This
>> 178 * also satisfies PAGE_SIZE alignment as the largest page size
>> 179 * allowed is 64K.
>> 180 */
>> 181 . = ALIGN(0x10000);
>> 182 __init_end = .;
>> 183 /* freed after init ends here */
60 184
61 _end = .; !! 185 /*
>> 186 * Force .bss to 64K alignment so that .bss..swapper_pg_dir
>> 187 * gets that alignment. .sbss should be empty, so there will be
>> 188 * no holes after __init_end. */
>> 189 BSS_SECTION(0, 0x10000, 8)
>> 190
>> 191 _end = . ;
>> 192
>> 193 /* These mark the ABI of the kernel for debuggers. */
>> 194 .mdebug.abi32 : {
>> 195 KEEP(*(.mdebug.abi32))
>> 196 }
>> 197 .mdebug.abi64 : {
>> 198 KEEP(*(.mdebug.abi64))
>> 199 }
>> 200
>> 201 /* This is the MIPS specific mdebug section. */
>> 202 .mdebug : {
>> 203 *(.mdebug)
>> 204 }
62 205
63 STABS_DEBUG 206 STABS_DEBUG
64 DWARF_DEBUG 207 DWARF_DEBUG
65 ELF_DETAILS 208 ELF_DETAILS
66 .hexagon.attributes 0 : { *(.hexagon.a <<
67 209
>> 210 /* These must appear regardless of . */
>> 211 .gptab.sdata : {
>> 212 *(.gptab.data)
>> 213 *(.gptab.sdata)
>> 214 }
>> 215 .gptab.sbss : {
>> 216 *(.gptab.bss)
>> 217 *(.gptab.sbss)
>> 218 }
>> 219
>> 220 /* Sections to be discarded */
68 DISCARDS 221 DISCARDS
>> 222 /DISCARD/ : {
>> 223 /* ABI crap starts here */
>> 224 *(.MIPS.abiflags)
>> 225 *(.MIPS.options)
>> 226 *(.options)
>> 227 *(.pdr)
>> 228 *(.reginfo)
>> 229 }
69 } 230 }
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